KR20160116453A - Noise Prevention Member - Google Patents

Noise Prevention Member Download PDF

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Publication number
KR20160116453A
KR20160116453A KR1020150044182A KR20150044182A KR20160116453A KR 20160116453 A KR20160116453 A KR 20160116453A KR 1020150044182 A KR1020150044182 A KR 1020150044182A KR 20150044182 A KR20150044182 A KR 20150044182A KR 20160116453 A KR20160116453 A KR 20160116453A
Authority
KR
South Korea
Prior art keywords
chip
binder
sound
mixture
noise
Prior art date
Application number
KR1020150044182A
Other languages
Korean (ko)
Inventor
박병은
Original Assignee
서울시립대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 서울시립대학교 산학협력단 filed Critical 서울시립대학교 산학협력단
Priority to KR1020150044182A priority Critical patent/KR20160116453A/en
Publication of KR20160116453A publication Critical patent/KR20160116453A/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E04F15/203—Separately-laid layers for sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E04C2/243—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 one at least of the material being insulating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/296—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8428—Tray or frame type panels or blocks, with or without acoustical filling containing specially shaped acoustical bodies, e.g. funnels, egg-crates, fanfolds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise
    • E04F2290/042—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise with a facing or top layer for sound insulation

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Electromagnetism (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)

Abstract

According to the present invention, a noise prevention material blocks and absorbs a noise transmitted through a medium. The noise prevention material blocking and absorbing the noise transmitted through the medium is comprises a first mixture having sawdust or wood flour, a plurality of chips, and a binder. The chip comprises: a body; and a through-hole provided to the body. The body comprises a second mixture having the sawdust or wood flour and the binder.

Description

Noise Prevention Member

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a noise preventive material that can be used in buildings and other structures.

Recently, multi - layered houses and apartments have been exposed to interstory noise problems, and there have been active discussions on ways to solve these problems and legal institutionalization.

1 is a cross-sectional view showing an example of a building construction standard that is currently standardized. 1, the lightweight foamed concrete layer 2 and the finish mortar layer 3 are sequentially laminated on the upper side of the concrete slab layer 1. A sound insulating mat (4) is provided between the concrete slab layer (1) and the lightweight foamed concrete layer (2) for noise shielding, and a side buffer material (5) is provided between the laminate and the side wall.

The sound insulating mat 4 is for blocking the noise generated in the upper layer from being transmitted to the lower layer through the medium of the building, and it is mainly composed of a material capable of absorbing sounds.

In the current construction standard shown in the drawing, the noise generated in the upper layer is absorbed through the sound-insulating mat 4, and the shock absorbing material 5 is installed on the inner side wall of the side wall so that the impact applied to the closed mortar layer 3 To the neighboring space.

Korean Utility Model Registration No. 20-0379075 discloses a noise preventing member having a sound absorbing and sound insulating effect by using first and second foam layers having different densities, respectively. This is constructed by stacking foamed porous layers having different densities to disperse vibration to prevent noise.

BACKGROUND OF THE INVENTION [0002] As a conventional noise preventive material, a foam sheet mainly foamed with organic material is used. However, such a noise-proofing material has a disadvantage in that it can not provide a good sound-absorbing function and a sound-absorbing function for a low-frequency sound range, which is a problem in the interlayer noise, because it has sound insulation and sound absorption function mainly for noise in a high frequency range.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is a technical object to provide a noise preventing member capable of effectively reducing noise or vibration transmitted through a structural medium of a building.

According to a first aspect of the present invention, there is provided a noise preventing member adapted to sound and sound a noise transmitted through a medium, the noise preventing member comprising a plurality of chips, And the body is composed of a mixture containing sawdust or wood and a binder.

A noise preventing member according to a second aspect of the present invention is a noise preventing member adapted to sound and absorb noise transmitted through a medium, the noise preventing member comprising a first mixture including sawdust or wood and a plurality of chips and a binder, And a through hole provided in the body and the body, and the body is formed of a second mixture containing sawdust or wood and a binder.

And further comprising a porous material in the first mixture.

And further comprising a porous material in the second mixture.

The porous material may include porous ceramics or zeolite.

Further, the chip is characterized in that a plurality of sizes are set.

Further, the chip is characterized in that a plurality of types are set.

Further, the through holes are formed in different shapes according to the chips.

And the through holes are formed to have different sizes depending on the chips.

Further, the binder is an inorganic binder.

The binder may have a mixing ratio of 5 to 25% by weight.

A noise preventing member according to a third aspect of the present invention is a noise preventing member adapted to sound and absorb noise transmitted through a medium, the noise preventing member comprising a first mixture including a plurality of chips and a porous mineral and a binder, And a through hole provided in the body and the body, wherein the body is formed of a second mixture containing sawdust or wood and a binder.

Characterized in that the second mixture further comprises a porous mineral.

The noise preventing member according to the present invention has a plurality of kinds of pores having different sizes. The sound waves transmitted through the noise preventing member are reflected or resonated according to the resonance frequency of the pores. Therefore, the sound insulating function and the sound absorbing function of the noise preventing member are improved.

1 is a sectional view showing an example of a building construction standard to which the present invention is applied.
2 is a diagram for explaining a basic concept of the present invention;
3 is a perspective view showing an outer shape of the noise preventing member 10 according to the first embodiment of the present invention.
Fig. 4 is a perspective view showing an outer shape of the chip 20 constituting the noise preventing member of Fig. 3; Fig.
5 is a cross-sectional view of the chip 20 shown in Fig.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the embodiments described below are illustrative of one preferred embodiment of the present invention, and examples of such embodiments are not intended to limit the scope of the present invention.

The basic concept of the present invention will be described.

Examples of the noise preventive material generally used for providing sound insulation and sound absorption function include an organic material including water, such as PVC, nylon, and polyester, and water-based acrylic, ethylvinyl acetate (EVA), polyvinyl alcohol A foamed foam sheet is used. Such a noise preventing member exhibits a sound insulating function and a sound absorbing function by the pores provided in the foam sheet.

If the size of the pore is adjusted in the above-described noise preventing member, the sound absorbing characteristic can be changed. That is, as the size of the pores is made smaller, the sound absorption characteristics with respect to the low frequency range are improved. However, in order to reduce the pore size of the noise-proofing material, an advanced process and a high manufacturing cost are required.

According to the study by the present inventors, when pores having different sizes are formed in a certain material, sound absorption and sound insulation functions are improved. Fig. 2 is a view for explaining such a sound absorption and sound insulation function.

In FIG. 2, reference numeral 200 denotes a porous material having a plurality of pores. The first pores 210 having a relatively large diameter and the second pores 220 having a small diameter are present in the porous material. When the sound waves A are drawn from the outside, the sound waves A are transmitted through the medium 200, And the first and second pores 210 and 220, respectively. However, when the sound wave A having passed through the first pore 210 enters the second pore 220, the sound wave A is reflected or refracted as indicated by a and b. This phenomenon occurs similarly when the sound wave b passing through the second pore 220 enters the first pore 210. This is because the resonance frequency of the pore varies depending on the pore size.

Generally, the sound insulation function of a material is determined by how much of the sound wave applied from the outside passes through it, and the sound absorption function is determined by how much the sound wave applied from the outside is absorbed. All materials are vibrated when they are stimulated by external sound waves. At this time, the frequency sounds that are affected by the vibration are absorbed through the process of conversion into vibrational energy.

As described above, if pores having different sizes are formed in a certain medium, the linearity of the sound waves is remarkably reduced as the sound waves are reflected and refracted in passing through the pores. That is, the sound insulation function is improved. The sound waves are resonated while passing through pores of different sizes. That is, the sound wave energy of various frequency bands is converted into the vibration energy of the pore, thereby improving the sound absorption function.

3 is a perspective view showing an outer shape of the noise preventing member according to the present invention. In the drawing, the noise preventing member 10 comprises a chip composed of sawdust or wood powder. Fig. 4 is a perspective view showing the outer shape of the chip 20, and Fig. 5 is a sectional view thereof.

In the figure, the chip 20 comprises a body 21 having a cylindrical shape. A through hole 22 is formed in a central portion of the body 21 along the longitudinal direction to form a tubular shape as a whole. The body 21 is made mainly of sawdust or wood flour, and if necessary, a suitable binder is mixed therein. In the case of forming the chip 20, a sawdust or a mixture of wood and a binder may be formed, and the mixture may be easily formed, for example, by extruding the mixture through a mold.

When wood is processed, by-products such as sawdust are essentially produced. In the case of sawdust, it is equipped with pores originally possessed by wood. Also, when sawdust is combined with a binder or the like, the resultant pores are provided with a larger number of pores than the original wood. The size and number of pores will depend on the pressure applied to the material. This is the same for wood flourized wood.

The chip 20 has pores originally possessed by sawdust or wood, a pore layer between sawdust or wood powder produced in the process of mixing them, and a through hole 22 provided in the chip 20, Respectively. These pores provide a synergistic effect and provide excellent sound absorption and sound insulation.

Further, although the chip 20 is shown as having a cylindrical shape in the drawing, the shape of the chip 20 is not limited to a specific one. For example, the chip 20 may be formed in a polygonal, spherical, or polygonal columnar shape, and the size of the chip 20 may be variously formed. The through hole 22 formed in the chip 20 is for forming a pore layer, and the shape and size of the through hole 22 are not limited to specific ones. The size and shape of the through holes 22 provided in the chip 20 may be variously formed.

As the binder, both an organic binder and an inorganic binder can be employed. In consideration of flame retardancy of the heat insulating material 10, an inorganic binder is preferably employed. Also, the inorganic binder is mixed with sawdust or wood flour in an amount of about 5 to 25% by weight.

In the case of manufacturing the noise preventing member 10, the chip 20 and the binder are mixed, and the mixture is conveyed to an extrusion roller and extruded or pressurized using, for example, a hydraulic press to form a square or rectangular board . Of course, the size and shape of the noise preventing member are not limited to specific ones.

The noise preventing member 10 according to the present embodiment is formed with pores having various sizes and shapes in the chip 20 in the first place when the chip 20 is used to form the noise preventing member 10 . As described above, the chips 20 are also provided with pores having various sizes and shapes. These pores obstruct the progress of sound waves by reflecting or refracting the sound waves passing through the noise preventing member 10 as described above, and the sound waves are absorbed while being converted into vibrational energy by the resonance in the pores.

Further, in another preferred embodiment of the present invention, the noise preventing member 10 may further employ a porous material to form pores having various sizes. As such a porous material, for example, porous ceramics or zeolite may be employed. Porous ceramics typically have pores in the order of micrometers, and zeolites have pores in nm. These micro pores can provide a function that is effective for eliminating noise in the low frequency band.

The embodiments according to the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the scope of the present invention.

For example, in the above-described embodiment, a mixture in which the chip 20 and the binder are mixed is used in forming the noise preventing member 10. However, In addition to the chip 20 and the binder, it is also preferable to use a mixture of sawdust and wood powder.

10: noise preventing member, 20: chip,
21: body, 22: through hole.

Claims (19)

In a noise preventing member adapted to sound and absorb sound transmitted through a medium,
Comprising a plurality of chips,
The chip has a body and a through hole provided in the body,
Wherein the body comprises a mixture comprising sawdust or wood and a binder. The method according to claim 1,
Wherein the body further comprises a porous material. 3. The method of claim 2,
Wherein the porous material comprises porous ceramic or zeolite. The method according to claim 1,
Wherein the chip is set to a plurality of sizes. The method according to claim 1,
Wherein the chip has a plurality of types of shapes. The method according to claim 1,
Wherein the through holes are formed in different shapes according to chips. The method according to claim 1,
Wherein the through holes are formed to have different sizes according to chips. In a noise preventing member adapted to sound and absorb sound transmitted through a medium,
Comprising a first mixture comprising sawdust or wood and a plurality of chips and binders,
The chip has a body and a through hole provided in the body,
Wherein the body comprises a second mixture comprising sawdust or wood and a binder. 9. The method of claim 8,
Wherein the first mixture further comprises a porous material. 9. The method of claim 8,
Wherein the second mixture further comprises a porous material. 11. The method according to claim 9 or 10,
Wherein the porous material comprises porous ceramic or zeolite. 10. The method of claim 9,
Wherein the chip is set to a plurality of sizes. 10. The method of claim 9,
Wherein the chip has a plurality of types of shapes. 10. The method of claim 9,
Wherein the through holes are formed in different shapes according to chips. 10. The method of claim 9,
Wherein the through holes are formed to have different sizes according to chips. 10. The method of claim 9,
Wherein the binder is an inorganic binder. 17. The method of claim 16,
Wherein the binder has a mixing ratio of 5 to 25% by weight. In a noise preventing member adapted to sound and absorb sound transmitted through a medium,
Comprising a plurality of chips and a first mixture comprising a porous mineral and a binder,
The chip has a body and a through hole provided in the body,
Wherein the body comprises a second mixture comprising sawdust or wood and a binder. 19. The method of claim 18,
Characterized in that the second mixture further comprises a porous mineral.
KR1020150044182A 2015-03-30 2015-03-30 Noise Prevention Member KR20160116453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150044182A KR20160116453A (en) 2015-03-30 2015-03-30 Noise Prevention Member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150044182A KR20160116453A (en) 2015-03-30 2015-03-30 Noise Prevention Member

Publications (1)

Publication Number Publication Date
KR20160116453A true KR20160116453A (en) 2016-10-10

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Family Applications (1)

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KR1020150044182A KR20160116453A (en) 2015-03-30 2015-03-30 Noise Prevention Member

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